891results about How to "Extend your life" patented technology

The invention discloses an inverter bus ripple active suppression method and system. The method comprises the following steps: collecting bus voltage and current, and extracting a broadband ripple frequency spectrum; inputting the broadband ripple frequency spectrum and the operation data of the inverter into a physical degradation model, and predicting the service life state of the electrolytic capacitor; a dynamic frequency tolerance threshold matrix is constructed through the predicted service life state of the electrolytic capacitor, and a sensitive frequency band of the electrolytic capacitor is identified; threat degree evaluation is carried out on each sensitive frequency band, and a frequency-varying virtual impedance network used for inverting a compensation voltage reference instruction is constructed according to an evaluation result; and according to the generated compensation voltage reference instruction, an inverter power switch tube is driven to generate corresponding compensation voltage. The system is used for implementing the method. The beneficial effects of the invention are that the ripple suppression is converted into a dynamic complementation problem between the capacitance physical impedance degradation amount and the inverter virtual impedance compensation amount, and the reliability and economical efficiency of an inverter system are greatly improved.

The utility model belongs to the technical field of plasma rotating electrode powder manufacturing equipment, and relates to a vacuum dynamic sealing structure of a plasma gun for powder manufacturing, which comprises an external powder blocking module and a dynamic sealing module, the external powder blocking module consists of a first powder blocking plate, a powder blocking ring and an insulating powder blocking plate, the first powder blocking plate is fixed at the top of a plasma gun body to form an arc-shaped shielding surface, and the dynamic sealing module is fixed at the top of the plasma gun body. The powder retaining ring coaxially sleeves the positive electrode of the plasma gun body and forms an annular gap type powder blocking structure with the insulating powder retaining plate; the dynamic sealing module is sequentially provided with a dynamic sealing installation metal cylinder, an insulating cylinder and a sealing assembly from outside to inside in the radial direction of the plasma gun body, the insulating cylinder and the dynamic sealing installation metal cylinder form a step-shaped sealing structure, and vacuum sealing and electrical isolation are achieved between the dynamic sealing module and the external powder blocking module through bakelite and an O-shaped sealing ring. The vacuum dynamic sealing structure provided by the utility model has the advantages of powder isolation, reliable sealing, no burning loss short circuit and no need of vacuum grease auxiliary sealing lubrication.

The application relates to a kind of distributed unmanned aerial vehicle ad hoc network routing methods based on deep reinforcement learning, comprising;According to Markov decision process, the deep reinforcement learning architecture of unmanned aerial vehicle communication network is built;Running Dijkstra algorithm sends original data packet from source node to destination node and generates original training data according to the routing process of original data packet to pre-train the deep reinforcement learning architecture;The coordinates of the destination node D of target data packet are input, the next hop node B of current node A is obtained using the pre-trained deep reinforcement learning architecture, and target training data is generated, and the deep reinforcement learning architecture is retrained according to the original training data and target training data;Next hop node B is used as starting node, until the next hop node is the destination node, the routing of target data packet is completed, and the application can enhance the robustness of network and improve the life of unmanned aerial vehicle communication network.

The application relates to the technical field of vehicle emission control, and discloses a vehicle regeneration prompting method, device, equipment, medium and program product. The method comprises the following steps: acquiring a multi-dimensional parameter value; judging whether the SCR urea crystallization amount exceeds a first threshold value of the crystallization amount according to the SCR mixer inlet temperature and a urea crystallization risk index; and when the SCR urea crystallization amount exceeds the first threshold value of the crystallization amount, entering a first prompting mode. According to the technical scheme, the regeneration demand can be prompted according to the SCR mixer inlet temperature and the urea crystallization risk index, the performance decline of the vehicle caused by the urea crystallization accumulation can be effectively prevented, and the reliability and operation efficiency of the vehicle emission system are improved.

The present application relates to a kind of catalyst for hydrogen chloride oxidation preparation chlorine and its preparation method and application.The preparation method includes: after carrier substrate, metal tantalum powder, binder solution are mixed, extrusion forming is obtained green body, the green body is prepared composite carrier by calcination, the mass fraction of metal tantalum powder in the composite carrier is 5%-30%;Inorganic salt containing catalytically active element is made into solution and is placed in the composite carrier, and after drying, pre-product is obtained, and the pre-product is prepared catalyst by calcination.The preparation method described in the present application prepares high thermal conductivity composite carrier, not only effectively improves the heat conduction efficiency of catalyst, guarantees the effective activity of catalyst, but also guarantees the stability of composite carrier, thereby effectively prolongs the life of catalyst.

The utility model discloses an electromagnetic damping vibration isolation device belongs to vibration control technical field. The utility model solves the technical problem of the magnetic field intensity fixed of electromagnetic damping vibration isolation device and coil heating easily leads to performance attenuation. The utility model discloses an electromagnetic damping vibration isolation device, including coil subassembly and conductor block. Coil subassembly includes coil and coil clamp. Coil clamp is held in the outer periphery of coil. Coil clamp includes clamp body and water cooling pipeline. The heat dissipation block is equipped on the clamp body, and the heat dissipation block extends along the radial direction of coil, and multiple heat dissipation blocks are evenly arranged around coil. The water cooling pipeline is surrounded in the clamp body. The conductor block is located between at least two groups of coil subassembly, and the magnetic pole of every two groups of coil subassembly is opposite, thereby making the conductor block can be subjected to electromagnetic damping force when producing vibration. The utility model discloses a vibration isolation device can cover the vibration control demand of multiple frequency bands, avoids coil overheat aging, improves the life of vibration isolation device.

This invention discloses a low-temperature start-stop control method for a hydrogen fuel cell vehicle, comprising: during the startup of the on-board fuel cell system, performing a self-check to determine whether the ambient temperature is below 0°C; when the ambient temperature is below 0°C, detecting the operating status of the hydrogen fuel cell vehicle and executing different cold-start strategies according to the operating status; during the shutdown of the on-board fuel cell system, detecting the ambient temperature, and when the ambient temperature is below 0°C, executing a shutdown strategy to reduce cooling circuit heat dissipation. The shutdown strategy to reduce cooling circuit heat dissipation includes: reducing the cooling circuit temperature to a first preset temperature, where the first preset temperature is greater than 30°C. This invention's low-temperature start-stop control method for hydrogen fuel cell vehicles adopts a self-starting approach, avoiding multiple cold starts due to energy allocation during operation in low-temperature environments. It optimizes the fuel cell system shutdown purging strategy during vehicle operation, increases the shutdown temperature, slows down system temperature drop, improves insulation, reduces the risk of low-temperature cold start failure, improves fuel cell stack lifespan, reduces the additional heating space of the fuel cell, and reduces additional consumption of the fuel cell system.

The utility model discloses a water tank with constant pressure measurement function belongs to water tank technical field, aims at solving the most water outlet point of prior art is located water tank under one side of liquid level, and the position of water outlet point is fixed immovably, along with the water supply of carrying out, the liquid level in water supply water tank is constantly reduced, wherein the distance between water outlet point and liquid level will constantly reduce, lead to the water pressure of water outlet point constantly small, although the water tank usually has the water replenishing mechanism to reach the purpose of time water replenishing, but actually still can form fluctuation to the water pressure of water supply water tank, cannot realize constant pressure water supply, and the water replenishing of water tank single, every day also cannot carry out measurement statistics, thereby the actual water replenishing of subsequent management personnel cannot know water tank accurately, thereby bring the problem of influence to the judgment and overhaul of personnel. Including stainless steel water tank, the upper side of stainless steel water tank is connected with inlet pipe, and the other side below of stainless steel water tank is connected with outlet pipe.

The invention discloses a dynamic sterilization method based on cough audio detection and analysis, which comprises the following steps: acquiring hospital audio, dividing the hospital audio into audio segments, identifying audio frames containing cough audio, and merging the audio frames containing the cough audio to obtain cough audio segments; overlapping coughs are separated, and samples of all the single-sound coughs are obtained and correspond to the individuals to which the single-sound coughs belong; judging whether the individual coughs accidentally or not on the basis of the quantity and the time interval of the single-sound coughs, and further judging whether a hospital environment sterilization early warning program needs to be started or not; and for each environment index of the hospital, presetting a corresponding disinfection trigger threshold, and if it is judged that the hospital environment disinfection early warning program needs to be started and the hospital environment index reaches the corresponding disinfection trigger threshold, starting a corresponding disinfection program to complete disinfection of the hospital environment. According to the invention, 'on-demand disinfection 'can be realized accurately and dynamically in real time, and interference to normal medical activities is reduced to the greatest extent while the transmission path of aerosol in a hospital is blocked.

The application relates to a dual-phase high-entropy ceramic material for high-temperature thermal barrier coatings and a preparation method thereof, in particular to a dual-phase high-entropy ceramic (La 0.2 Nd 0.2 Gd 0.2 Y 0.2 Ho 0.2 )2Zr2O7 with low thermal conductivity and high thermal expansion coefficient, which is mainly used for thermal isolation, thermal barrier coatings and other applications in high-temperature environments. The application is prepared by adopting a solid-phase reaction sintering process through accurate design of the combination of rare earth elements, forms a stable dual-phase structure, effectively inhibits grain growth through grain boundary pinning, and thus maintains a nanoscale grain structure. Meanwhile, the material can efficiently block heat transfer at high temperatures through optimization of phase proportion, and the thermal expansion characteristics are matched with a metal base layer, effectively avoiding the falling risk caused by the difference in thermal expansion of the two, and thus greatly improving the service life and reliability of the material in a high-temperature environment. The high-entropy ceramic material of the application can be widely applied to fields with high demand for high-temperature thermal isolation in aerospace, aviation, automobile industry and the like, is especially suitable for thermal barrier coatings, high-temperature thermal insulation materials and other high-temperature thermal insulation applications, and has important engineering application value.

The invention relates to an electric power converter, for example a motor drive for driving an electric motor. The converter comprises a cooling system having a heat sink for dissipating thermal energy generated by the converter and a coolant flow device for cooling the heat sink, a first measuring device for measuring the temperature of the coolant inlet, a second measuring device for measuring the temperature of the heat sink, an estimation device for estimating the thermal energy transferred to the heat sink, wherein the converter estimates a thermal resistance of the heat sink based on the measured temperatures and the estimated thermal energy transferred to the heat sink, compares the estimated thermal resistance with a reference value and outputs a signal in case the difference between the estimated thermal resistance and the reference value exceeds a threshold value. The invention also relates to a method for operating an electric power converter.

The application relates to a vacuum smelting furnace feeding lifting mechanism, which comprises a feeding chamber and a lifting device arranged at the upper end in the feeding chamber. The lifting device comprises an electric hoist, the electric hoist is provided with a chain, the end of the chain is provided with a hook, the inner side wall of the feeding chamber is provided with a rectangular frame, the rectangular frame is internally provided with a horizontally-sliding mounting rack, the front end of the mounting rack is provided with a guide plate, the outer side of the rectangular frame is provided with a horizontal moving mechanism for driving the mounting rack to horizontally move, the guide plate is provided with a through hole for the chain to pass through, and the hook is located below the guide plate. Through the combined motion of horizontal movement and vertical lifting, the hook is actively deviated from the position directly below the lifting lug, and manual pulling of the inclined hook is not needed.

The utility model provides a kind of double-end control solenoid valve, including control body, the both ends of control body are fixedly connected with valve body, the control body includes second shell, the both ends of second shell are sleevedly provided with end cap, the inside of second shell is provided with first coil and first magnet, the middle part of first magnet is fixedly connected with first connecting rod, first connecting rod is fixedly connected with limit disc, and the both side edges of limit disc are chamfered, the upper end of second shell one side is fixedly connected with third shell, the inside of third shell is provided with second coil and second magnet, the middle part of second magnet is fixedly connected with second connecting rod, the end of second connecting rod is provided with inclined plane, the upper end of second magnet is provided with spring, and spring is upwardly pressed against the inner wall of third shell. The utility model can reduce the use quantity of valve body in application scene, and has the function of no electricity keeping.

The utility model discloses a novel push wheel linkage feeding mechanism belongs to the technical field of automation equipment, including fixed plate, feeding box, rotary feeding unit, X axis feeding unit, Y axis feeding unit and push unit, and fixed plate horizontal arrangement is installed in the top of fixed plate, and rotary feeding unit is installed in the top of fixed plate, and sets up at the back of feeding box, and X axis feeding unit is installed in the top of fixed plate, and Y axis feeding unit is installed in the top of fixed plate, and sets up at the front of feeding box, and push unit is installed in the top of fixed plate, and sets up at the front of rotary feeding unit. The utility model discloses through the innovation mechanical linkage and sensing control, realized low -cost, high -efficient, high reliability's automation feeding, especially applicable to the quick sorting and the turning scene of small -size material, and the power manufacturing industry reduces the benefit of benefit.

The utility model provides a cold chain logistics temperature control container door sealing structure, including box, box door, sealing layer and lock bar, the box is equipped with outer layer and inner layer respectively, the box door establishes in the one end of box, the box door includes first door and second door, the recessed lock groove is equipped in the first door middle part, the second door middle part is equipped with the lock ring of protruding, the sealing layer establishes in the back of first door, the sealing layer is the form of covering the inside of outer layer, and the sealing layer includes door body and sealing strip, the lock bar is worn in the lock ring, and the lock bar can be worn in the inside of lock groove, the utility model's beneficial effects are: its structure design is simple and reasonable, has the sealing structure of further improving temperature control container box door, the sealing layer of the box door of being equipped with is worn in the inside of box, and the sealing layer adopts the sealing strip and the junction of box door, however the sealing strip also is worn in the inside of box, helps sealing layer to reduce the irradiation of ultraviolet, improves the life of sealing layer use.

This invention discloses a dual-component thrust attitude control engine, comprising a mounting plate, a swirling mixer, an igniter, and a combustion chamber nozzle. The mounting plate contains two isolated gas chambers, each with an intake pipe connected to its inlet and an on / off controllable solenoid valve at its outlet. The two inlets of the swirling mixture are connected to the outlets of the two gas chambers, and the outlet of the swirling mixer is connected to the inlet of the combustion chamber nozzle. The swirling mixer is used to swirl and mix the gas input into it before outputting it. The igniter is used to ignite the mixed gas input into the combustion chamber nozzle. The combustion chamber nozzle is used to supply the combusted mixed gas for combustion output. This configuration solves the problem that existing technologies cannot simultaneously achieve compact structure, high mixing efficiency, and excellent thermal management performance.

The utility model relates to a sample introduction tube technical field especially, it relates to a kind of support device of ICP equipment sample introduction tube, including fixed frame;Still including installation sliding column, fixed frame top is fixedly connected with installation sliding column, rack is slidably connected in installation sliding column interior, installation sliding column side is equipped with slot, slot side is equipped with installation disc, installation disc is fixedly connected with gear, installation disc center is rotatably connected with rotating sleeve, rotating sleeve is fixedly connected with fixed support on, fixed support is rotatably connected with buckle on, buckle and gear are movably connected;The utility model is through rack, gear and rotating thread strip, the precise adjustment of the height of sample introduction tube is realized, the sample introduction demand of atomizer can be accurately matched, to improve atomization efficiency, and enhance the stability and sensitivity of detection signal, and appropriately reduce sample introduction height can reduce atomizer blockage risk, improve height can reduce the volatilization loss of sample in transmission process, prolong the life of key components.

This invention provides an active heating method and system for a two-dimensional turntable servo mechanism, belonging to the field of laser communication technology. The method includes acquiring the feedback temperature and motor torque of the azimuth or pitch axis; when the motor torque is zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a first heating power based on the first d-axis current and the electrical control angle; when the motor torque is not zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a second heating power based on the second d-axis current and the q-axis current, until the temperature difference returns to the preset range and heating stops. This invention utilizes the heat generated by the motor's own current to replace external heating devices, achieving uniform heating from within, effectively reducing deformation and frictional torque fluctuations in key moving parts caused by temperature gradients, and improving the turning table's pointing accuracy and thermal stability under extreme temperature changes.

A method for manufacturing an electroluminescent element includes: forming a first electrode on a substrate; forming a first insulating layer covering the first electrode; forming a second electrode disposed on the first insulating layer and having a region overlapping with the first electrode; forming a first electron transport layer in contact with the second electrode; forming a second insulating layer covering the region overlapping with the second electrode and having an opening in the region overlapping with the first electrode. The method involves coating the opening with a liquid composition containing a metal oxide material and a solvent; removing the solvent after coating to form the second electron transport layer; forming a light-emitting layer overlapping the second electron transport layer and containing an electroluminescent material; and forming a third electrode in the region overlapping with the light-emitting layer.

The application relates to the field of electric tool structures, and particularly discloses a tool head quick clamping structure and an electric tool, wherein the tool head quick clamping structure comprises a tool holder main body, a tool head which is detachably mounted on the tool holder main body, and a bushing which is slidably sleeved outside the tool holder main body; the tool holder main body is provided with a locking piece arranging position, the locking piece arranging position is provided with a locking piece, the tool holder main body is provided with a mounting hole, one end of the tool head is an insertion end, the peripheral surface of the insertion end is provided with an annular locking groove, and the insertion end of the tool head is inserted into the mounting hole of the tool holder main body during installation; the inner wall of the bushing is provided with a protruding part, the protruding part is located outside the locking piece; an avoiding space is formed between the inner wall of the bushing and the outer wall of the tool holder main body, and the avoiding space is located in the outer side area of the locking piece; a first elastic assembly is mounted between the tool holder main body and the bushing, one end of the first elastic assembly is in contact with the locking piece, and installation can be completed by only inserting with one hand, so that the work efficiency is remarkably improved.

This utility model proposes a maintenance-free vacuum machine, comprising: a spiral central shaft and a cylinder. The central surface of the spiral central shaft has a spiral structure. The cylinder is installed in conjunction with the spiral central shaft, and the contact surfaces of the two are fitted together to ensure that no lubricating oil enters the cylinder, avoiding problems such as oil carbonization, emulsification, and contamination. There is no need to replace the filter element, add lubricating oil, or stop the machine for maintenance regularly, which greatly reduces the operation and maintenance costs. The outer periphery of the cylinder is provided with a first water-cooling jacket, which is connected to an external cooling device through cooling pipes. It is used to cool the cylinder with circulating water, keeping the operating temperature at 30-40℃, effectively slowing down component aging, extending equipment life, and eliminating the risks of high-temperature burns, lubricating oil leakage, and mechanical jamming, reducing safety hazards for operators. Exhaust gas is discharged directly without oil mist pollution. The water cooling system reduces water waste through closed-loop circulation, which meets the requirements of green manufacturing.

The utility model discloses an oil seal structure of intermediate support assembly, including oil seal outer framework, oil seal inner framework, inner blade mouth and outer blade mouth, and oil seal outer framework is annular, and the end of oil seal outer framework is outwardly bent and forms the baffle, and the section of inner framework is annular and is L type, and inner framework is engaged in the baffle, and outer blade mouth is annular and is provided with the clamping slot on its edge. The utility model discloses oil seal outer framework and oil seal inner framework adopt the excess pressure and install into one whole oil seal assembly, and inner blade mouth can not only realize the sliding of intermediate support assembly on the intermediate spline shaft neck, but also seals the grease in the inner chamber of intermediate support assembly, prevents sundries from entering the inner chamber of intermediate support assembly, can discharge the extra grease simultaneously, and outer blade mouth protects inner blade mouth from directly contacting the sand, prevents the sand from damaging the first group oil seal formed by inner blade mouth and oil seal inner framework under the bad environment, prolongs the life of the first group oil seal, also prolongs the life of intermediate support assembly.

This utility model discloses a waterproof power adapter. The housing has an annular top step; the top step has an annular positioning groove, and the underside of the cover has an annular positioning ring wall that can fit into the positioning groove. The housing has an upward-extending annular surrounding wall outside the positioning groove. The annular surrounding wall, the top step, and the positioning ring wall form a sealing groove for injecting sealant. The housing has a connector for a power cord; the connector extends upward to connect to the sealing groove; the power cord's connector terminal can be inserted into the connector from above. This utility model, through the nested fit of the annular positioning groove and the positioning ring wall, combined with the innovative connection design between the sealing groove and the connector, achieves significant optimization in sealing performance, cost control, and assembly efficiency.

This utility model discloses a hydrogen injection device for a hydrogen refueling station, including a cooling tank. A first connecting pipe and a second pair of connecting pipes are fixedly installed opposite each other on both sides of the cooling tank. A heat exchange pipe is fixed between the first connecting pipe and the second pair of connecting pipes. Multiple filter cartridges are arranged on the side of the cooling tank closest to the first connecting pipe. Each filter cartridge contains a primary filter screen, a secondary ceramic fiber filter element, and a terminal polymer membrane filter element. The filter cartridges closest to the cooling tank are connected to the first connecting pipe, and the multiple filter cartridges are connected to each other via the second connecting pipe. The top of the filter cartridges furthest from the cooling tank is fixed with the first pair of connecting pipes. Through this structure, the cooling tank effectively suppresses temperature rise during refueling, reducing safety risks caused by the easily elevated temperature of hydrogen during refueling. The three-stage filtration module reduces potential damage to components from contaminant particles in the hydrogen fuel, effectively extending the lifespan of critical components.

The application discloses a kind of based on live equipment of thing networking chip, including support frame, support frame is provided with rotating table, rotating table is installed with fixed plate, the inner wall of fixed plate is provided with the light supplement mechanism for live light supplement, the inner wall of support frame is provided with double-shaft motor, the present application can increase the connection strength, can indirectly improve the angle rotation stability of thing networking chip camera, can improve the live effect of the device, simultaneously can complete subsequent preparation data statistics quickly by thing networking chip camera, support cross plate can slide on ground, simultaneously in the process of support cross plate movement, the support area of the device can be increased, the stability of the device can be improved, avoid in the process of thing networking chip camera rotation, because of the equipment overall vibration caused by rotating motion, then equipment dump occurs, the image live identification stability of the device can be improved.

The utility model relates to fishing net machine technical field, concretely relates to a kind of fishing net machine's compression joint shaft buffer mechanism, comprising: main shaft and compression joint shaft;Swing bar with movable hole is opened, and one end of the main shaft is penetrated movable hole;Driving part, it is fixedly connected with the main shaft;Driven part, it is rotatably connected with the swing bar and keeps contact with driving part;Swing arm, one end is fixedly connected with the compression joint shaft, and the other end of the swing arm is movably connected with swing bar.The utility model is added with main body, so that the main shaft and main body can be connected using bearing cooperation mode, i.e. the main shaft and main body are rotatably connected, and rolling support structure is arranged between main body and movable hole of swing bar, so that the main body and movable hole are rolling contact, the original main shaft-waist type hole sliding friction is converted into rolling friction, reduce hole wall and main shaft abrasion, prolong service life, while sliding impact can be eliminated, reduce vibration amplitude, guarantee compression joint precision.

The utility model relates to the technical field of oilfield efficient exploitation, especially relates to the linkage structure of connecting rod piston that is exempt from piston cavity leak. The track slider (310) is fixedly connected on the link of piston linkage connecting rod (307) hinged, the track slider (310) can follow track vertical and advance, the link of piston linkage connecting rod (307) hinged passes through piston cover (308), and the link of piston linkage connecting rod (307) hinged end part is arranged with the position piston (601).